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#1 2015-08-11 18:41:57

dutzen
Member
Registered: 2015-08-11
Posts: 3

Simulate and Sniff Legic Prime

Hi Everyone,
we have to investigate our university system, which used the Legic Prime chip and is now changing to legic advant. So for our seminar we have to attack the old system which we succeed by writing valid values to the card. The next step would be to emulate "own" cards with the proxmark3 and it would be nice to sniff to the traces.

So first: Emulating: Proxmark has already a function: "hf legic sim" [phase drift [frame drift [req/resp drift]]] Start tag simulator (use after load or read)

Which we used after reading a valid card but it didn't worked. Maybe someone can help us with that.

Second: Sniff traffic: We'd like to sniff the traffic between card and reader. But proxmark has no function to sniff legic traffic. We can only sniff 14a traffic without annotations but that didn't worked neither. I hope someone can help us with that, cause deadline is september wink

Best regards Dominik

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#2 2015-08-11 18:54:04

iceman
Administrator
Registered: 2013-04-25
Posts: 9,497
Website

Re: Simulate and Sniff Legic Prime

Sadly enough, I don't have access to a legic/legic advant.  If I have that, I might be able to help out.

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#3 2015-08-17 00:45:03

dutzen
Member
Registered: 2015-08-11
Posts: 3

Re: Simulate and Sniff Legic Prime

That is sad sad
But maybe you have already done something with the proxmark and a legic card in the past?
If you cant help us specificly maybe some hints or tricks? smile

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#4 2015-08-17 09:46:26

iceman
Administrator
Registered: 2013-04-25
Posts: 9,497
Website

Re: Simulate and Sniff Legic Prime

Sorry, I havn't.  Good luck with your thesis.

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#5 2016-01-20 11:42:17

mosci
Contributor
Registered: 2016-01-09
Posts: 94
Website

Re: Simulate and Sniff Legic Prime

I can ( at least) provide some decoded tag-data ('hf legic decode' output) or samples
if that helps anyone

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#6 2016-01-20 11:50:59

mosci
Contributor
Registered: 2016-01-09
Posts: 94
Website

Re: Simulate and Sniff Legic Prime

^^ roll legic prime  - not legic advant

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#7 2016-01-20 11:54:16

iceman
Administrator
Registered: 2013-04-25
Posts: 9,497
Website

Re: Simulate and Sniff Legic Prime

Sure, that data is always good to have.

The legic sourcecode has some issues with overflows, so remake and testing would be nice.

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#8 2016-01-20 11:59:49

mosci
Contributor
Registered: 2016-01-09
Posts: 94
Website

Re: Simulate and Sniff Legic Prime

unfortunately I can not finf the possibility to PM you  big_smile

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#9 2016-01-20 12:04:16

iceman
Administrator
Registered: 2013-04-25
Posts: 9,497
Website

Re: Simulate and Sniff Legic Prime

you find my email all over this forum.

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#10 2016-01-20 13:39:05

mosci
Contributor
Registered: 2016-01-09
Posts: 94
Website

Re: Simulate and Sniff Legic Prime

ok, I have used you github-email

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